Brentford and Chiswick (UK Parliament constituency)

This former constituency is toward the south-west of the historic county of Middlesex, in what is since 1965 west London.

It was established as a division of the county of Middlesex, named after the towns of Brentford and Chiswick.

In the 1885–1918 distribution of parliamentary seats it had been the eastern part of the Brentford division.

The seat rapidly became under-sized in electorate, see malapportionment – the area forming the seat was unusually declining in population, with in the 1918 to 1930 period the major loss of servants and lodgers among many of the larger houses particularly in Chiswick, and areas of reduction of overly dense housing in Brentford.

One key area of growth in this seat was instead in the number of commercial plants, yards and offices adjoining the 'Golden Mile', Brentford.